Cassini Mission Essay

Cassini Mission Essay

Introduction
The reason I chose Cassini as my mission was I thought it was interesting that it was the only the fourth space probe to go to Saturn. Also that sixteen European countries and the United States are working as a team on it. They are responsible for building, designing, flying and collecting data on the mission.

Description of the mission
Cassini was launched in October 15, 1997. The mission type of Cassini is flyboy. Operator of the mission was NASA, ESA and ESI. The mission was centered on Saturn. The launch site was Space Launch Complex 40 Cape Canerval Air Force Station in Florida. The mission finally landed on Saturn on July 1, 2004. It is a planetary mission. The most important part of the mission after the launch was the Saturn orbit insertion. Cassini will make six targeted flyboys of four icy moons. The icy moons are Iapetus, Enceladus, Dione and Rhea. When Cassini landed on Saturn it fired up its main engine. Released from Cassini a Huygens probe which was contributed by a European Space Agency which carries eight other projects.
The probe is used to take pictures of Titans atmosphere and surface. Also it is used to measure particle temperatures. Also it is used to examine the physical properties, chemical composition and the structure of Titans atmosphere. They also use it to study clouds, winds and particles in the atmosphere. They explore the physical properties of Titans surface.

Description of the spacecraft
The Cassini was originally going to be the second three axis stabilized. The spacecraft Cassini was made by CRFA, Comet Rendezvous Asteroid Flyboy. They ran into some money problems so they had to terminate the CRFA. So the Cassini was made to be more specialized then if it was made by the CRFA. They also had to cancel the implantation of the Mariner Mark II type of spacecraft.

The spacecraft is the largest interplanetary one to date including the probe and the orbiter. The orbiter weighs in at 2,150 kg which is 4,700 pounds and the probe is 3,132 kg which is 6,900 pounds. With all of its attachment it weighed in at 12,000 pounds. The only two heavier spacecrafts ever sent were the Phobos spacecraft sent by the Soviet Union to Mars. The height of the spacecraft is 6.8 meters which is 22 feet high and more than 4 meters which is 13 feet wide. The Cassini spacecraft is 1630 interconnected electronic component. It also has 22,000 wire components in it and over 14 kilometers of caballing. The CPU of Cassini has redundant control system. The way the spacecraft it takes about 84 minutes to send radio signals from Saturn to Earth. Cassini instruments are Cassini Plasma Spectrometer which is a direct sensing instrument that measure energy. Composite Infrared Spectrometer which is a remote sensing instrument which measures infrared waves coming from any objects to learn about their temperatures. A Cosmic Dust Analyzer which measures speed, size and direction of tiny dust grains by Saturn. Imaging Science Subsystem, which captures images of just visible light and also infrared and ultraviolet images. Ion Neutral Mass Spectrometer which analyzes small charged particles. Dual Technique Magnetometer it is used to measure the strength and direction of magnetic field that is around Saturn.

Completed History
Cassini first launched in 1982 its origin date. Forming a working group to investigate future missions was the National Academy of Sciences. A pair of European scientists made a suggestion that a paired Titan probe and Saturn Orbiter as a possible joint mission. Then in 1983 one of NASA’s groups called Solar System Exploration Committee. Which decided and recommended the same as another NASA group. In 1984 and 1985 NASA made a partnership with ESA which is the European Space Agency. They made a joint study in 1985 on Cassini working hand in hand on the project. Then in 1986 ESA decided to do a solo study instead of still working with NASA on it. In 1987 Sally Ride did an individual study on Cassini. Sally was able to describe the Saturn Orbiter and the probe by just doing her solo study. In 1988 the Associate Administrator for Space Science which is one of NASA’s groups. A man named Len Fisk decided to agree to the idea of a joint mission with NASA and ESA. His counterpart at ESA was Roger Bonnet. Suggesting that the ESA should choose the Cassini mission from the 3 candidates at hand at the time. NASA said they would put their full effort and time into the mission as soon as ESA did. At the time NASA was becoming more sensitive and prone to work with European and foreign countries. NASA was having issues with funding for Cassini so they decided to partnership with a European company so that they would have enough money to fund Cassini. The Cassina even became a political issue with congress they questioned if this mission should even be finished or perused any longer but NASA persuaded congress by saying the ESA had already funded the Cassni mission so it would be foolish to abandon the mission at the current state that it was at.

Updates
Thursday, July 27, 2006 it was reported that the Cassini Significant Events last week and the atmospheric density measured at Titan 16. The TAMWG group which is the Titan Atmospheric Modeling Working Group met them on the 27th to discuss the result of and whether altitudes for their up and coming updates and encounters. The TAMWG had suggested that there were absolutely no changes in altitude or temperature. Then there came the T16 which caught everybody’s attention because it changed our outlook on Titan.

Conclusion
What I gained from this project is now I have knowledge of how these missions work and how thin specific mission worked. Also I learned about NASA and also ESA. How they operate and how they even work hand in hand on projects or missions together. They work accurate and precise on the projects. I learned how certain parts of the spacecraft work together. All in all I learned a lot about spacecrafts and how they work and operate.